CN210663439U - High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine - Google Patents

High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine Download PDF

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CN210663439U
CN210663439U CN201920472663.1U CN201920472663U CN210663439U CN 210663439 U CN210663439 U CN 210663439U CN 201920472663 U CN201920472663 U CN 201920472663U CN 210663439 U CN210663439 U CN 210663439U
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enters
temperature
lithium bromide
water
absorber
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李伟
李金峰
尚德敏
杨学文
张明利
徐国伟
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Hit Harbin Institute Of Technology Kint Technology Co ltd
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Hit Harbin Institute Of Technology Kint Technology Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00Adapting or protecting infrastructure or their operation
    • Y02A30/27Relating to heating, ventilation or air conditioning [HVAC] technologies
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/62Absorption based systems

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Abstract

The utility model provides a high temperature waste water lithium bromide absorption refrigeration all-in-one, its overall structure includes: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a driving heat source on the right side, two circulating pumps and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed, and the two ends of the upper horizontal cylinder are closed. Wherein: the upper part of the interior of the upper cylinder body is provided with a condenser, and the lower part of the interior of the upper cylinder body is provided with a generator; the evaporator is arranged on the upper part of the interior of the lower cylinder, and the absorber is arranged below the interior of the lower cylinder. The lithium bromide water solution is heated by the driving heat source in the generator, after part of the lithium bromide water solution is vaporized, the lithium bromide concentrated solution enters the absorber downwards, and the refrigerant water vapor enters the condenser upwards. The refrigerant water vapor is cooled and condensed by cooling water in the condenser, then enters the evaporator through the throttle valve downwards, expands and vaporizes to absorb the heat of air-conditioning chilled water in the evaporator, the refrigerant water vapor generated by vaporization enters the absorber downwards, is absorbed by the lithium bromide concentrated solution in the absorber, the concentration of the solution is reduced, and then is sent back to the generator upwards by the circulating pump.

Description

High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine
Technical Field
The utility model relates to a waste heat utilization technology field especially relates to a high temperature waste water lithium bromide absorption refrigeration all-in-one.
Background
In the production process of industries such as metallurgy, coal chemical industry, salt chemical industry and the like, a large amount of high-temperature process circulating cooling water or process wastewater exists and contains a large amount of high-temperature heat energy. Because the water quality components are complex, the conventional heat exchange equipment is easy to pollute, corrode and even block, only a few northern enterprises can develop and utilize, most northern enterprises are used for building heating or process water heating, and in summer of most southern enterprises or northern enterprises, the waste heat is directly discharged into the atmosphere, so that the heat waste and the heat pollution are caused. If the heat of the high-temperature waste water can be used as a driving heat source of a lithium bromide refrigerator, the lithium bromide refrigerator is a perfect supplementary scheme for air conditioning refrigeration, and the lithium bromide refrigerator can be fully utilized in the south and the north all the year round.
The lithium bromide absorption refrigerator is mainly composed of a generator, a condenser, an evaporator, an absorber, a heat exchanger, a circulating pump and the like. In the operation process of the lithium bromide absorption refrigerator, after the lithium bromide dilute solution is heated by a driving heat source in the generator, the refrigerant water in the solution is vaporized, and the concentration of the lithium bromide dilute solution in the generator is continuously increased along with the continuous vaporization of the refrigerant water and enters the absorber; the refrigerant water vapor enters the condenser, is cooled by cooling water in the condenser and then is condensed to form high-pressure low-temperature liquid water; when the refrigerant water in the condenser enters the evaporator through the throttle valve, the refrigerant water expands rapidly to be vaporized, and absorbs a large amount of heat of the frozen water in the evaporator in the vaporization process, thereby achieving the purpose of cooling and refrigeration; in the process, the low-temperature refrigerant water vapor enters the absorber, is absorbed by the lithium bromide concentrated solution in the absorber, the concentration of the solution is gradually reduced, and then is sent back to the generator by the circulating pump to complete the whole circulation.
The circulation is not stopped, and the cold energy is continuously produced.
However, the lithium bromide refrigerator generator usually adopts a shell-and-tube or plate-type equal-dividing-wall heat exchanger, which has high requirement on water quality, and the high-temperature wastewater has complex water quality components and is easy to cause pollution, corrosion and even blockage to the generator, so that the high-temperature wastewater cannot be directly used as a driving heat source of the lithium bromide absorption type unit. If the heat energy of the lithium bromide is transferred to clean medium water by adopting proper intermediate heat exchange equipment and then enters the lithium bromide unit, the process flow is complex, the occupied space is large, the investment cost is high, and heat transfer loss can be caused.
The boiling point of water can be reduced along with the reduction of the environmental pressure, for example, a negative pressure environment is artificially manufactured, so that the high-temperature waste water is subjected to flash evaporation, clean steam is generated and is directly conveyed into a generator to release heat, and the high-temperature waste water is directly used as a driving heat source of the lithium bromide refrigerating unit.
SUMMERY OF THE UTILITY MODEL
The utility model provides a high temperature waste water lithium bromide absorption refrigeration all-in-one, its overall structure includes: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a driving heat source on the right side, two circulating pumps and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed; wherein: the upper part inside the upper cylinder is provided with a condenser, the lower part inside the upper cylinder is provided with a generator, the upper part inside the lower cylinder is provided with an evaporator, and the lower part inside the lower cylinder is provided with an absorber; the lithium bromide dilute solution is heated by a driving heat source in the generator, the concentration of the solution is increased after part of refrigerant water is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and refrigerant water vapor enters a condenser upwards; the refrigerant water vapor is cooled and condensed by cooling water in the condenser, then enters the evaporator through the throttle valve downwards, expands and vaporizes to absorb the heat of the frozen water in the evaporator, the refrigerant water vapor generated by vaporization enters the absorber downwards and is absorbed by the lithium bromide concentrated solution in the absorber, the solution concentration is reduced, and then the refrigerant water vapor is sent back to the generator upwards by the circulating pump; the other circulating pump is used for circulating spraying of refrigerant water in the evaporator; cooling water from the cooling tower enters an absorber to absorb heat, then enters a condenser to absorb heat, and finally is sent back to the cooling tower to release heat; the chilled water coming back from the air conditioner user enters the evaporator, and after heat release and temperature reduction, the low-temperature chilled water is sent to the air conditioner user; one side of the heat exchanger is high-temperature concentrated solution flowing out of the generator, and the other side of the heat exchanger is low-temperature dilute solution flowing out of the absorber, and the high-temperature concentrated solution and the low-temperature dilute solution exchange heat; the method is characterized in that: the driving heat source is a high-temperature wastewater flash evaporator, and the high-temperature wastewater flash evaporator flashes part of the high-temperature wastewater into steam which is used as the driving heat source of the high-temperature wastewater lithium bromide absorption refrigeration all-in-one machine.
The high-temperature wastewater flash evaporator is an upright tank-type container and consists of an upper end enclosure, a lower end enclosure and an upright cylinder body in the middle, the top of the upper end enclosure is externally connected with a high-temperature wastewater inlet pipe, the bottom of the lower end enclosure is externally connected with a drain pipe and a drainage pump, a conical nozzle is arranged on a horizontal water spraying plate which is arranged in the vertical cylinder body and close to the upper end enclosure, the conical nozzle adopts a larger outlet aperture, high-temperature wastewater enters the tank after passing through the conical nozzle, a part of the high-temperature wastewater is flashed into steam, and the steam enters a heat transfer pipe in the generator through a steam inlet pipe to be condensed and release heat, the lithium bromide dilute solution is used for heating the lithium bromide dilute solution in the generator to generate refrigerant water vapor, condensed water and non-condensable gas generated in the heat transfer pipe enter the steam-water separator through the drain pipe, the non-condensable gas generated by separation is discharged through the vacuum pump, and the condensed water enters the drain pipe of the high-temperature wastewater flash evaporator and is discharged together with the discharged high-temperature wastewater through the drain pump.
Drawings
FIG. 1 is an internal structure diagram of an embodiment of the lithium bromide absorption refrigeration integrated machine with high-temperature wastewater of the utility model;
fig. 2 is an overall diagram of the high-temperature waste water lithium bromide absorption refrigeration integrated machine of the utility model.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Fig. 1 shows the internal structure diagram of the embodiment of the high-temperature waste water lithium bromide absorption refrigeration all-in-one machine.
The utility model relates to a high temperature waste water lithium bromide absorption refrigeration all-in-one machine embodiment inner structure as follows:
a lithium bromide absorption refrigeration integrated machine for high-temperature waste water is mainly composed of a generator 50, a condenser 40, an evaporator 60, an absorber 70, a heat exchanger 30, a plurality of pumps, a driving heat source, namely a high-temperature waste water flash evaporator 80 and the like.
When the lithium bromide aqueous solution is heated by the driving heat source, namely the flash steam of the high-temperature wastewater flash evaporator in the generator 50, the refrigerant water in the solution is vaporized; with the continuous vaporization of the refrigerant water, the concentration of the lithium bromide aqueous solution in the generator continuously rises, and then the lithium bromide aqueous solution enters the absorber 70 downwards; the refrigerant water vapor upwards enters the condenser 40, is cooled by cooling water in the condenser 40 and then is condensed to form high-pressure low-temperature refrigerant water; the low-temperature refrigerant water in the condenser enters the evaporator 60 downwards through the throttle valve, rapidly expands and vaporizes, and absorbs a large amount of heat of the frozen water in the evaporator 60 in the vaporization process, thereby achieving the purposes of temperature reduction and refrigeration; then, the low-temperature refrigerant water vapor generated by vaporization enters the absorber 70 downwards, is absorbed by the lithium bromide water solution in the absorber 70, the solution concentration is reduced, and is sent back to the generator upwards by the circulating pump 73, so that the whole cycle is completed. In addition, the circulating pump 63 is used for circulating spraying of the refrigerant water in the evaporator, thereby enhancing evaporation.
The cooling water first enters the absorber 70 through the cooling water inlet 71 to absorb heat, then enters the condenser 40 to absorb heat, and finally is sent to the cooling tower from the cooling water outlet 41. The chilled water enters the evaporator 60 from the chilled water inlet 61, and after heat release and temperature reduction, the low-temperature chilled water is sent to an air conditioner user from the chilled water outlet 62. The circulation is kept, and the refrigeration is continuous.
Because the lithium bromide dilute solution is cooled in the absorber 70, the temperature is lower, in order to save the heat for heating the dilute solution and improve the heat efficiency of the whole device, a heat exchanger 30 is added in the system, so that the high-temperature concentrated solution flowing out of the generator 50 and the low-temperature dilute solution flowing out of the absorber 70 exchange heat, and the temperature of the dilute solution entering the generator is improved.
The lithium bromide aqueous solution is heated in the generator 50 by the driving heat source, i.e. the flash steam of the high temperature wastewater flash evaporator, so that the refrigerant water in the solution is continuously vaporized. This high temperature waste water flash distillation steam is the utility model relates to a drive heat source of high temperature waste water lithium bromide absorption refrigeration all-in-one embodiment, it is high temperature waste water flash vessel 80, maintains vacuum environment by the vacuum pump, makes the high temperature waste water part that gets into wherein take place the flash distillation and produce, and this flash distillation steam is condensed in the heat transfer pipe in getting into generator 50 through steam admission pipe 51 and is released heat for solution in the heating generator 50 makes it produce refrigerant water vapor. The condensed water generated in the heat transfer pipe is discharged through the drain pipe 52.
Fig. 2 shows an overall diagram of the high-temperature waste water lithium bromide absorption refrigeration all-in-one machine.
The figure shows the outer shape overall and the attached facilities of the embodiment of the high-temperature waste water lithium bromide absorption refrigeration integrated machine.
Wherein,
the embodiment profiles generally include: the device comprises a frame 5, an upper cylinder 10, a lower cylinder 20, a heat exchanger 30 and a driving heat source, namely a high-temperature wastewater flash evaporator 80; the frame 5 combines the upper cylinder 10, the lower cylinder 20, the heat exchanger 30 and a driving heat source, i.e., a high-temperature wastewater flash evaporator 80.
The subsidiary facilities include: cooling tower 90, air conditioning unit 100.
In the upper cylinder 10, a condenser 40 is horizontally arranged at the upper part, and a generator 50 is horizontally arranged at the lower part; in the lower cylinder 20, an evaporator 60 is horizontally disposed at an upper portion thereof, and an absorber 70 is horizontally disposed at a lower portion thereof.
A heat exchanger 30 is arranged at the right side of the frame 5 and in the middle of the right side of the upper cylinder and the lower cylinder.
The high-temperature wastewater flash evaporator 80 is vertically arranged at the left side of the frame 5, and is in the shape of an upright tank type container which consists of an upper end enclosure, a lower end enclosure and an upright cylinder body in the middle. The top of the upper end enclosure is externally connected with a water inlet pipe 81 of high-temperature wastewater, and the bottom of the lower end enclosure is externally connected with a water discharge pipe 82 and a water discharge pump 83. A conical nozzle 84 is arranged on a horizontal water spraying plate which is arranged inside the vertical cylinder body and close to the upper end enclosure, the conical nozzle is provided with a larger outlet aperture, and high-temperature wastewater enters the tank after passing through the conical nozzle.
The high-temperature wastewater flowing into the flash evaporator barrel from the high-temperature wastewater inlet pipe 81 of the upper end enclosure passes through the conical nozzle 84, and then a part of the high-temperature wastewater is flashed into steam, enters the heat transfer pipe in the generator 50 through the steam inlet pipe 51, is condensed and releases heat, and is used for heating the lithium bromide dilute solution in the generator 50 to generate refrigerant water vapor. The condensed water and the non-condensable gas generated in the heat transfer pipe enter the steam-water separator 53 through the drain pipe, the separated non-condensable gas is discharged through the vacuum pump 54, and the condensed water enters the drain pipe 82 of the high-temperature wastewater flash evaporator 80 as a driving heat source and is discharged together with the discharged high-temperature wastewater through the drain pump 83.
The cooling water generated from the cooling tower 90 firstly enters the absorber in the lower cylinder 20 through the cooling water inlet 71 to absorb heat, then enters the condenser 40 of the upper cylinder 10 to absorb heat, and finally is sent back to the cooling tower from the cooling water outlet 41.
The chilled water from the air conditioning unit 100 enters the evaporator 60 in the lower cylinder 20 through the chilled water inlet 61, and after heat is released, the low-temperature chilled water returns to the air conditioning unit 100 through the chilled water outlet 62 to supply cold for users. The circulation is not stopped, and the cold energy is continuously produced.

Claims (2)

1. The utility model provides a high temperature waste water lithium bromide absorption refrigeration all-in-one, its overall structure includes: the device comprises an upper horizontal cylinder, a lower horizontal cylinder, a heat exchanger on the left side, a driving heat source on the right side, two circulating pumps and a plurality of connecting pipelines, wherein the two ends of the upper horizontal cylinder are closed; wherein: the upper part inside the upper cylinder is provided with a condenser, the lower part inside the upper cylinder is provided with a generator, the upper part inside the lower cylinder is provided with an evaporator, and the lower part inside the lower cylinder is provided with an absorber; the lithium bromide dilute solution is heated by a driving heat source in the generator, the concentration of the solution is increased after part of refrigerant water is vaporized, the lithium bromide concentrated solution enters an absorber downwards, and refrigerant water vapor enters a condenser upwards; the refrigerant water vapor is cooled and condensed by cooling water in the condenser, then enters the evaporator through the throttle valve downwards, expands and vaporizes to absorb the heat of the frozen water in the evaporator, the refrigerant water vapor generated by vaporization enters the absorber downwards and is absorbed by the lithium bromide concentrated solution in the absorber, the solution concentration is reduced, and then the refrigerant water vapor is sent back to the generator upwards by the circulating pump; the other circulating pump is used for circulating spraying of refrigerant water in the evaporator; cooling water from the cooling tower enters an absorber to absorb heat, then enters a condenser to absorb heat, and finally is sent back to the cooling tower to release heat; the chilled water coming back from the air conditioner user enters the evaporator, and after heat release and temperature reduction, the low-temperature chilled water is sent to the air conditioner user; one side of the heat exchanger is high-temperature concentrated solution flowing out of the generator, and the other side of the heat exchanger is low-temperature dilute solution flowing out of the absorber, and the high-temperature concentrated solution and the low-temperature dilute solution exchange heat; the method is characterized in that: the driving heat source is a high-temperature wastewater flash evaporator.
2. The high-temperature wastewater lithium bromide absorption refrigeration all-in-one machine according to claim 1, characterized in that: the high-temperature wastewater flash evaporator is in the shape of an upright tank container and comprises an upper end enclosure, a lower end enclosure and an upright barrel in the middle, the top of the upper end enclosure is externally connected with a high-temperature wastewater inlet pipe, the bottom of the lower end enclosure is externally connected with a drain pipe and a drain pump, a conical nozzle is arranged on a horizontal water spraying plate which is close to the upper end enclosure and inside the upright barrel, the high-temperature wastewater enters the tank after passing through the conical nozzle, and a part of the high-temperature wastewater is flashed into steam and enters the generator through a steam inlet pipe.
CN201920472663.1U 2019-04-01 2019-04-01 High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine Active CN210663439U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111306836A (en) * 2019-04-01 2020-06-19 哈尔滨工大金涛科技股份有限公司 High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111306836A (en) * 2019-04-01 2020-06-19 哈尔滨工大金涛科技股份有限公司 High-temperature wastewater lithium bromide absorption refrigeration all-in-one machine

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